Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2022 → ESTABLISHING A SOIL HEALTH FRAMEWORK FOR WATER-LIMITED REGIONS

United States Department of Agriculture (USDA) 2022

ESTABLISHING A SOIL HEALTH FRAMEWORK FOR WATER-LIMITED REGIONS

Soil Water Health

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : ESTABLISHING A SOIL HEALTH FRAMEWORK FOR WATER-LIMITED REGIONS

Identification : 1027663

Pays : Etats Unis

Durée : START : 01 JAN 2022 TERM : 31 DEC 2024

Résumé
There is a growing consensus around a set of soil health indicators that are repeatable, sensitive to management changes, and include chemical, physical, and biological components. However, a framework that links soil health indicators to essential soil functions and their relative sensitivity to management decisions in water-limited environments is yet to be identified. The overarching goal of this project is to develop that framework under two major management factors, cropping systems intensification and manure application, in water-limited environments. The project will evaluate the relationships between soil health indicators and specific soil functions, including a better mechanistic understanding of soil health and soil water dynamics. To accomplish this goal, we will utilize existing long-term experiments at Clovis, NM and Akron, CO and on-farm sites from more than 30 farmers’ fields in Colorado, Nebraska, and Kansas. The project will evaluate the sensitivity of soil physical, chemical, and biological indicators to management factors, apply multivariate approaches to analyze the relationships between soil health indicators and seasonal water dynamics, and develop a framework linking soil health indicators to essential soil functions for water-limited environments. The project will address the program area priority of Soil Health (A1401) by advancing scientific understanding of soil processes and interactions to develop a soil health assessment framework for water-limited regions. The framework will promote water conservation and guide the development of sustainable crop production practices for water-limited regions, ultimately leading to the resilience and economic viability of cropping systems in arid and semiarid environments.

Objectifs
The overarching goal of this project is to enhance the sustainability of cropping systems in water-limited environments through an improved understanding of linkages between various soil health indicators and essential soil functions. Specific objectives include:Gain an in-depth understanding of the sensitivity of soil physical, chemical, and biological indicators to two important cropping systems strategies, cropping intensification and compost additions, and their interactions in water-limited environments.Quantify the relationship between soil health indicators and essential soil water functions, and seasonal water dynamics. Water measurements in the soil profile as well as seasonal soil water dynamics data will be evaluated along with soil health parameters to quantify these relationships.Develop a framework linking soil health indicators to essential soil functions for water-limited environments using data from on-farm sites. Relationships quantified in objective two will be verified using on-farm datasets. A soil health framework will be developed using on-farm data collected from 30 farmers’ fields

Financement total : $742,170

Performing Institution : NEW MEXICO STATE UNIVERSITY
Investigator : Ghimire, R. ; Angadi, SA, V.. ; Acosta-Martinez, VE, . ; Schipanski, ME, . ; Fonte, ST, JO

Présentation : USDA (NIFA)

Page publiée le 23 novembre 2021